Microsoft plans to release Office 2019, its next "perpetual-license" productivity suite, in the second half of 2018, with previews appearing "in the second quarter of 2018". These moves will push IT to migrate to Windows 10 and ensure that any holdouts pay up for Office 365. Microsoft is moving all iterations of Windows 10 to have an option for S mode; you can read about all the details of this transition, here. Plus there is also the issue of familiarity, habit, and comfort that might see some users choose to skip the upgrade. The post states that Office 2019 will only be available to Windows 10, or the next long-term servicing version of Windows Server. Microsoft officials said past year that a Windows 10 Enterprise in S Mode variant would be coming, and there are hints that a Windows 10 IoT in S Mode could exist, too. Windows 10 has been on a good rise during the past year, and Windows 7 has slowly been declining. As per web analytics firm StatCounter, Windows 10 received 42.78 percent of the desktop market, finally edging out 8-year-old Windows 7, which scored 41.86 percent.
He goes on to say that Vista was a wake-up call in this regard; when work began on Windows 7, "much tighter controls were put in place.to ensure a constantly healthy and functioning code base".
At Microsoft, we're committed to helping our commercial customers deliver a secure and productive modern workplace - and that means helping them get current and stay current on Office and Windows.
On average, a release took about three years from inception to completion but only about six to nine months of that time was spent developing "new" code. Visit the Windows 10 Tech Community.
It's clear that at the lower end of the hardware requirements, Microsoft is pushing Pro S as that can save OEMs up to $60 on a license and effectively push the fee on to the user as it costs $50 to upgrade from Pro S to Pro.